135 lines
8.2 KiB
JSON
135 lines
8.2 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-102758",
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"assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
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"state": "PUBLISHED",
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"assignerShortName": "eclipse",
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"dateReserved": "2026-09-29T16:21:58.057Z",
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"datePublished": "2026-09-29T17:26:44.424Z",
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"dateUpdated": "2026-09-30T20:42:39.497Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c",
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"shortName": "eclipse",
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"dateUpdated": "2026-09-29T17:26:44.424Z"
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},
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-126",
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"description": "CWE-126 Buffer Over-read",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Eclipse Foundation",
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"product": "NetX Duo",
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"packageName": "NetX Duo",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThanOrEqual": "6.5.1.202602",
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"versionType": "custom"
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},
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{
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"status": "unaffected",
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"version": "6.5.2.202603"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "The `_nx_secure_x509_asn1_tlv_block_parse()` function parses ASN.1 TLV (tag-length-value) blocks out of DER-encoded data. It is the primitive underneath all X.509 certificate parsing in NetX Secure, and therefore runs on certificates supplied by a remote peer during the TLS handshake.\n\n\n\nThe function reads the one-byte ASN.1 tag from the caller's buffer *before* checking that the buffer holds at least one byte. When a caller passes a remaining length of zero, the guard correctly returns `NX_SECURE_X509_ASN1_LENGTH_TOO_LONG`, but the read has already happened one byte past the end of the buffer.\n\n\n\ncode:\n\n\n\nnx_secure/src/nx_secure_x509_asn1_tlv_block_parse.c\n\n\n\n```\n\n\n\nUINT _nx_secure_x509_asn1_tlv_block_parse(const UCHAR *buffer, ULONG *buffer_length, USHORT *tlv_type,\n\n USHORT *tlv_tag_class, ULONG *tlv_length,\n const UCHAR **tlv_data, ULONG *header_length)\n\n\n{\n\n\n\nUINT current_index;\n\n\n\nUSHORT current_tag;\n\n\n\nULONG length;\n\n\n\nULONG length_bytes;\n\n current_index = 0;\n current_tag = buffer[current_index]; /* <-- read before the bounds check */\n if (*buffer_length < 1)\n {\n return(NX_SECURE_X509_ASN1_LENGTH_TOO_LONG);\n }\n\n\n```\n\n\n\nThe remainder of the function is correctly ordered. The multi-byte length path is guarded by `length_bytes > 4 || length_bytes > *buffer_length` before its read loop, the decoded value is checked against `length > *buffer_length`, and the second single-byte length read follows its own `*buffer_length < 1` guard. The tag read is the only load placed ahead of its check.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>The `_nx_secure_x509_asn1_tlv_block_parse()` function parses ASN.1 TLV (tag-length-value) blocks out of DER-encoded data. It is the primitive underneath all X.509 certificate parsing in NetX Secure, and therefore runs on certificates supplied by a remote peer during the TLS handshake.</p><p>The function reads the one-byte ASN.1 tag from the caller's buffer *before* checking that the buffer holds at least one byte. When a caller passes a remaining length of zero, the guard correctly returns `NX_SECURE_X509_ASN1_LENGTH_TOO_LONG`, but the read has already happened one byte past the end of the buffer.</p><p>code:</p><p>nx_secure/src/nx_secure_x509_asn1_tlv_block_parse.c</p><p>```</p><p>UINT _nx_secure_x509_asn1_tlv_block_parse(const UCHAR *buffer, ULONG *buffer_length, USHORT *tlv_type,</p><code> USHORT *tlv_tag_class, ULONG *tlv_length,</code><br><code> const UCHAR **tlv_data, ULONG *header_length)</code><br><p>{</p><p>UINT current_index;</p><p>USHORT current_tag;</p><p>ULONG length;</p><p>ULONG length_bytes;</p><code> current_index = 0;</code><br><code> current_tag = buffer[current_index]; /* <-- read before the bounds check */</code><br><code> if (*buffer_length < 1)</code><br><code> {</code><br><code> return(NX_SECURE_X509_ASN1_LENGTH_TOO_LONG);</code><br><code> }</code><br><p>```</p><p>The remainder of the function is correctly ordered. The multi-byte length path is guarded by `length_bytes > 4 || length_bytes > *buffer_length` before its read loop, the decoded value is checked against `length > *buffer_length`, and the second single-byte length read follows its own `*buffer_length < 1` guard. The tag read is the only load placed ahead of its check.</p>"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-f95g-xc4w-mrcr"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "tinic",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"x_generator": {
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"engine": "Vulnogram 1.0.5"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.5,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-30T20:42:14.455455Z",
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"id": "CVE-2026-102758",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-30T20:42:39.497Z"
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}
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}
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]
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}
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} |